<template>
  <div class="star " :class="'star-' + size">
    <span class="star-item" v-for="(sc, index) in starClasses" :key="index" :class="sc"></span>
  </div>
</template>

<script>
export default {
  props: {
    score: Number,
    size: Number
  },
  computed: {
    starClasses () {
      const score = this.score
      const scs = []
      for (let index = 0; index < Math.floor(score); index++) {
        scs.push('on')
      }
      const halfStar = (score % 1) >= 0.5 ? 1 : 0
      if (halfStar) {
        scs.push('half')
      }
      const off = 5 - Math.floor(score) - halfStar
      for (let index = 0; index < off; index++) {
        scs.push('off')
      }

      return scs
    }
  }
}
</script>

<style lang="stylus" rel="stylesheet/stylus">
@import "../../common/stylus/mixins.styl"
  .star //2x图 3x图
    float left
    font-size 0
    .star-item
      display inline-block
      background-repeat no-repeat
    &.star-48
      .star-item
        width 20px
        height 20px
        margin-right 22px
        background-size 20px 20px
        &:last-child
          margin-right: 0
        &.on
          bg-image('./images/star48_on')
        &.half
          bg-image('./images/star48_half')
        &.off
          bg-image('./images/star48_off')
    &.star-36
      .star-item
        width 15px
        height 15px
        margin-right 6px
        background-size 15px 15px
        &:last-child
          margin-right 0
        &.on
          bg-image('./images/star36_on')
        &.half
          bg-image('./images/star36_half')
        &.off
          bg-image('./images/star36_off')
    &.star-24
      .star-item
        width 10px
        height 10px
        margin-right 3px
        background-size 10px 10px
        &:last-child
          margin-right 0
        &.on
          bg-image('./images/star24_on')
        &.half
          bg-image('./images/star24_half')
        &.off
          bg-image('./images/star24_off')
</style>
